We designed Mail Alarm to give people an easy and convenient way of knowing when their mail arrives. This product is a great way to be able to avoid unnecessary trips to the mail box to check the mail and can help as a reminder to check the mail after coming home from a long day of work. Mail Alarm also helps to be able to track the average arrival time for your mail. This function can help to be able to know when an important letter or package will arrive in the mail. The Mail Alarm comes with two Particle Photons, one small round pressure sensor, one LED light, and one Piezzo Buzzer.
How it Works
Mail Alarm is a very simple and efficient product. It consists of two Particle Photons that are able to communicate information back and forth from one another. One Photon is attached inside of your mailbox with the pressure sensor in the very middle of the mailbox.
The other photon can be located anywhere that has Wi-Fi. The Photon in the mailbox reads a low analog input when there is no mail inside the mailbox. As soon as there is mail placed onto the sensor and it surpasses the designated pressure threshold it sends a signal to the Photon which communicates that signal to the other Photon. Once the second Photon receives that signal, it sends a digital high output to the Piezzo Buzzer. This activates the buzzer for a preset amount of time, in our case for 2 seconds. After the buzzer goes off for 2 seconds it shuts off and the Photon sends a signal to an LED light. This light will remain on until the mail is retrieved from the mailbox and removed from the pressure sensor.
To set up Mail Alarm is extremely easy. First, make sure that the sensor, LED, and buzzer are all attached in the proper positions and to the proper pins on the respective Photons. Next attach your Photon and pressure sensor to the mailbox. This can easily be done with any kind of adhesive or double sided tape. Do the same for your other Photon in whatever your desired location may be. After that, make sure that your Photons have the suitable supply of power and you are ready to start collecting data and being alerted to when your mail has arrived.
The time that the mail is delivered each day is recorded online where you can find out on average what time the mail is delivered to you each day. The IFTTT pulls the data from the Particle cloud and makes a new row in Google Sheets. The IFTTT records the date, time and number of buzzer triggers. The data is then plotted onto a bar chart to show how many buzzer triggers it takes daily to go get the mail from the mail box.